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Finding the Fourth Proportional to 358,881.60, 538,401.24 and 106,142.39

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Solution

The fourth proportional to 358,881.60, 538,401.24 and 106,142.39 is: 159,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,881.60 : 538,401.24 = 106,142.39 : x
  2. Step 2: Convert to fraction form
    358,881.60/538,401.24 = 106,142.39/x
  3. Step 3: Cross multiply
    358,881.60x = 538,401.24 × 106,142.39
  4. Step 4: Simplify right side
    358,881.60x = 57,147,193,719.56
  5. Step 5: Solve for x
    x = 57,147,193,719.56/358,881.60
  6. Step 6: Final answer
    x = 159,236.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.